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Advisories

ALSA Library < 1.2.16.1 Double-Free via parse_def() in conf.c

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severity
high
date
Affecting

  • alsa-lib < 1.2.16.1

CWE
  • CWE-415 Double Free
CVSS
7
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Credit
Dmitrijs Trizna, Luigino Camastra, Guido Vranken, & Ze Sheng of Aisle Research
Description
The Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parse_def() in src/conf.c that allows attackers to corrupt memory by supplying maliciously crafted ALSA configuration text. When parsing nested compound or array configuration blocks, parse_def() fails to check return values before continuing, causing snd_config_delete() to be called twice on the same already-freed node, resulting in a NULL-pointer write or invalid memory read.

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